@ninthant Under Settings / Appearance, there is a Slow Mode that requires you to click to see more content. Maybe that's what you're looking for..?
@ChiefMcGill I believe it depends on the server... Some of them store locally, some use an object storage provider (Amazon S3, Exoscale, Wasabi, Google Cloud, or anything else that is S3-compatible or OpenStack Swift-compatible API's)...
This is according to my 30 seconds of Google researcfh.